1
|
Dehghan-Chenar S, Zare HR, Mohammadpour Z. Chitosan-ImH@γ-CD: a pH-sensitive smart bio-coating to enhance the corrosion resistance of magnesium alloys in bio-implants. RSC Adv 2024; 14:33301-33310. [PMID: 39434998 PMCID: PMC11492830 DOI: 10.1039/d4ra04744c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2024] [Accepted: 10/12/2024] [Indexed: 10/23/2024] Open
Abstract
Magnesium alloys hold promise as bio-implants but are hindered by poor corrosion resistance. To overcome this, a pH-sensitive smart anti-corrosion bio-coating was developed using a layer-by-layer technique. The first layer consists of Imidazol@waterproofed γ-Cyclodextrin metal organic framework (ImH@waterproofed γ-CD MOF), which encapsulates ImH, a green inhibitor, in waterproofed γ-CD MOF. The second layer is composed of 1% w/v chitosan. ImH@waterproofed γ-CD MOF was characterized by SEM, FTIR, and XRD. The corrosion parameters of the smart bio-coating were investigated through potentiodynamic polarization (Tafel) plots and electrochemical impedance spectroscopy (EIS) in simulated body fluid (SBF). The results indicate that when the magnesium alloy coated with the chitosan-ImH@γ-CD composite is placed in the SBF solution, the pH near the corrosion site increases over time. This increase in pH leads to the release of imidazole as a corrosion inhibitor, effectively preventing surface corrosion by forming a protective layer on the alloy's surface. The chitosan-ImH@γ-CD composite exhibits an inhibition efficiency of 97.27% after 5 days of immersion in SBF. Additionally, the cell viability on the chitosan-ImH@γ-CD composite surface is significantly higher than on uncoated Mg alloy, promoting MC3T3-E1 cell proliferation. Alkaline phosphatase results also indicate improved differentiation of MC3T3-E1 cells with the chitosan-ImH@γ-CD composite.
Collapse
Affiliation(s)
| | - Hamid Reza Zare
- Department of Chemistry, Yazd University Yazd 89195-741 Iran
| | | |
Collapse
|
2
|
Haghpanah Z, Mondal D, Momenbeitollahi N, Mohsenkhani S, Zarshenas K, Jin Y, Watson M, Willett T, Gorbet M. In vitro evaluation of bone cell response to novel 3D-printable nanocomposite biomaterials for bone reconstruction. J Biomed Mater Res A 2024; 112:1725-1739. [PMID: 38619300 DOI: 10.1002/jbm.a.37719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 02/24/2024] [Accepted: 03/29/2024] [Indexed: 04/16/2024]
Abstract
Critically-sized segmental bone defects represent significant challenges requiring grafts for reconstruction. 3D-printed synthetic bone grafts are viable alternatives to structural allografts if engineered to provide appropriate mechanical performance and osteoblast/osteoclast cell responses. Novel 3D-printable nanocomposites containing acrylated epoxidized soybean oil (AESO) or methacrylated AESO (mAESO), polyethylene glycol diacrylate, and nanohydroxyapatite (nHA) were produced using masked stereolithography. The effects of volume fraction of nHA and methacrylation of AESO on interactions of differentiated MC3T3-E1 osteoblast (dMC3T3-OB) and differentiated RAW264.7 osteoclast cells with 3D-printed nanocomposites were evaluated in vitro and compared with a control biomaterial, hydroxyapatite (HA). Higher nHA content and methacrylation significantly improved the mechanical properties. All nanocomposites supported dMC3T3-OB cells' adhesion and proliferation. Higher amounts of nHA enhanced cell adhesion and proliferation. mAESO in the nanocomposites resulted in greater adhesion, proliferation, and activity at day 7 compared with AESO nanocomposites. Excellent osteoclast-like cells survival, defined actin rings, and large multinucleated cells were only observed on the high nHA fraction (30%) mAESO nanocomposite and the HA control. Thus, mAESO-based nanocomposites containing higher amounts of nHA have better interactions with osteoblast-like and osteoclast-like cells, comparable with HA controls, making them a potential future alternative graft material for bone defect repair.
Collapse
Affiliation(s)
- Zahra Haghpanah
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Dibakar Mondal
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Nikan Momenbeitollahi
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Sadaf Mohsenkhani
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Kiyoumars Zarshenas
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Yutong Jin
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Michael Watson
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Thomas Willett
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
| | - Maud Gorbet
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ontario, Canada
| |
Collapse
|
3
|
Morphological and spectroscopical characterization of hyperbranched polyamidoamine–zwitterionic chitosan-encapsulated 5-FU anticancer drug. Polym Bull (Berl) 2020. [DOI: 10.1007/s00289-020-03495-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
4
|
Wang T, Matinlinna JP, He J, Ahmed KE, Burrow MF. Biomechanical and biological evaluations of novel BPA-free fibre-reinforced composites for biomedical applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 117:111309. [PMID: 32919670 DOI: 10.1016/j.msec.2020.111309] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/10/2020] [Accepted: 07/19/2020] [Indexed: 11/16/2022]
Abstract
This aim was to assess the biomechanical and biocompatibility properties of novel glass fibre-reinforced composites (FRCs) with a fluorinated urethane dimethacrylate (FUDMA) resin. Three ratios of FUDMA/TEGDMA (30/70 wt%, 50/50 wt%, 70/30 wt%) and two ratios of control FRCs with bis-GMA/TEGDMA (50/50 wt% and 70/30 wt%) containing long silanized E-glass fibres were prepared. Despite 70 wt% bis-GMA-FRC showed a significantly higher flexural strength (p < 0.05), 50 wt% FUDMA- and bis-GMA-FRCs were not differ from each other. The greatest surface hardness and weight increase after water storage were found in 70 wt% and 30 wt% FUDMA-FRCs, respectively. No significant difference was found in water sorption and solubility among all groups. Average surface roughness was 1.80 ± 0.05 μm, while 70 wt% FUDMA-FRC exhibited the greatest contact angle (p > 0.05). Viabilities and ALP activities of MC3TC-E1 cells in all FUDMA-FRCs were higher than bis-GMA-FRCs after 5 days. To conclude, the novel FUDMA-FRCs are potential substitutes that exhibited superior cytocompatibility properties but comparable biomechanical properties to bis-GMA-FRCs.
Collapse
Affiliation(s)
- Ting Wang
- Prosthodontics, Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, China; Dental Materials Science, Division of Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, China.
| | - Jukka P Matinlinna
- Dental Materials Science, Division of Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, China.
| | - Jingwei He
- College of Materials Science and Engineering, Department of Polymer Materials Science and Engineering, South China University of Technology, China.
| | - Khaled E Ahmed
- Prosthodontics Discipline, School of Dentistry and Oral Health, Griffith University, Gold Coast, Australia.
| | - Michael F Burrow
- Prosthodontics, Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, SAR, China.
| |
Collapse
|
5
|
Horo H, Porathoor S, Anand R, Kundu LM. A combinatorial approach involving E. coli cytosine deaminase and 5-fluorocytosine-nanoparticles as an enzyme-prodrug therapeutic method for highly substrate selective in situ generation of 5-fluorouracil. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
6
|
Gültan T, Bektaş Tercan Ş, Çetin Altındal D, Gümüşderelioğlu M. Synergistic effect of fabrication and stabilization methods on physicochemical and biological properties of chitosan scaffolds. INT J POLYM MATER PO 2020. [DOI: 10.1080/00914037.2020.1725752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Tuğçe Gültan
- Department of Chemical Engineering, Hacettepe University, Ankara, Turkey
- Department of Chemical Engineering and Applied Chemistry, Atilim University, Ankara, Turkey
| | | | | | - Menemşe Gümüşderelioğlu
- Department of Chemical Engineering, Hacettepe University, Ankara, Turkey
- Department of Bioengineering, Hacettepe University, Ankara, Turkey
| |
Collapse
|
7
|
Lei X, Gao J, Xing F, Zhang Y, Ma Y, Zhang G. Comparative evaluation of the physicochemical properties of nano-hydroxyapatite/collagen and natural bone ceramic/collagen scaffolds and their osteogenesis-promoting effect on MC3T3-E1 cells. Regen Biomater 2019; 6:361-371. [PMID: 31827888 PMCID: PMC6897342 DOI: 10.1093/rb/rbz026] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/13/2019] [Accepted: 06/19/2019] [Indexed: 01/11/2023] Open
Abstract
The use of various types of calcium phosphate has been reported in the preparation of repairing materials for bone defects. However, the physicochemical and biological properties among them might be vastly different. In this study, we prepared two types of calcium phosphates, nano-hydroxyapatite (nHA) and natural bone ceramic (NBC), into 3D scaffolds by mixing with type I collagen (CoL), resulting in the nHA/CoL and NBC/CoL scaffolds. We then evaluated and compared the physicochemical and biological properties of these two calcium phosphates and their composite scaffold with CoL. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction spectroscopy (XRD) and compressive tests were used to, respectively, characterize the morphology, composition, distribution and the effect of nHA and NBC to collagen. Next, we examined the biological properties of the scaffolds using cytotoxicity testing, flow cytometry, immunofluorescence staining, biocompatibility testing, CCK-8 assays and RT-PCR. The results reflected that the Ca2+ released from nHA and NBC could bind chemically with collagen and affect its physicochemical properties, including the infrared absorption spectrum and compression modulus, among others. Furthermore, the two kinds of scaffolds could promote the expression of osteo-relative genes, but showed different gene induction properties. In short, NBC/CoL could promote the expression of early osteogenic genes, while nHA/CoL could upregulate late osteogenic genes. Conclusively, these two composite scaffolds could provide MC3T3-E1 cells with a biomimetic surface for adhesion, proliferation and the formation of mineralized extracellular matrices. Moreover, nHA/CoL and NBC/CoL had different effects on the period and extent of MC3T3-E1 cell mineralization.
Collapse
Affiliation(s)
- Xiongxin Lei
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Jianping Gao
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical and Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fangyu Xing
- College of Food Science and Engineering, Shandong Agricultural University, Taian 271018, China
| | - Yang Zhang
- School of Life Science and Technology, Henan Institute of Science and Technology, Henan, 453003, China
| | - Ye Ma
- Department of Pathogen Biology and Immunology, School of Basic Course, Guandong Pharmaceutical University, Guangzhou, 510006, China
| | - Guifeng Zhang
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical and Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
8
|
Wu C, Sun J, Lu Y, Wu T, Pang J, Hu Y. In situ self-assembly chitosan/ε-polylysine bionanocomposite film with enhanced antimicrobial properties for food packaging. Int J Biol Macromol 2019; 132:385-392. [DOI: 10.1016/j.ijbiomac.2019.03.133] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 03/12/2019] [Accepted: 03/20/2019] [Indexed: 11/17/2022]
|
9
|
Ma C, Ma Z, Yang F, Wang J, Liu C. Poly (propylene fumarate)/β-calcium phosphate composites for enhanced bone repair. ACTA ACUST UNITED AC 2019; 14:045002. [PMID: 30901761 DOI: 10.1088/1748-605x/ab12ae] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A composite based on poly (propylene fumarate) (PPF) was investigated as a potential bone repair material for clinical use and it showed low heat release, suitable mechanical property and good biocompatibility. The in situ curing process would finish in less than 10 min. Compared with PMMA, PPF/TCP showed great decrease in heat release as the maximum temperature during curing process was 54.7 °C ± 1.69 °C. The compressive strength was between 109 ± 2 and 133 ± 6 MPa and the compressive modulus was 146 ± 11 to 161 ± 27 MPa, which were believed to be compatible and further supportive to surrounding bone. Besides, the surface morphology and hydrophilicity could be tailored by adjusting the content of β-calcium phosphate (β-TCP). Relatively stable pH value during degradation in PBS solution implied that it would not bring about acidification when implanted in vivo. In addition, PPF/TCP would boost mineralization and the apatite-like deposits on surface may advance the integrity of bone and materials. Moreover, the PPF/TCP obviously degraded and new bone formed especially when loaded with recombinant human bone morphogenetic protein-2 (rhBMP-2) in vivo. In summary, PPF/TCP composites showed suitable physical and chemical properties as well as good bioactivity and may therefore be a promising material for bone repair.
Collapse
Affiliation(s)
- Chunmeng Ma
- The State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China. Engineering Research Center for Biomaterials of Ministry of Education, East China University of Science and Technology, Shanghai 200237, People's Republic of China
| | | | | | | | | |
Collapse
|
10
|
Zheng S, Guan Y, Yu H, Huang G, Zheng C. Poly-l-lysine-coated PLGA/poly(amino acid)-modified hydroxyapatite porous scaffolds as efficient tissue engineering scaffolds for cell adhesion, proliferation, and differentiation. NEW J CHEM 2019. [DOI: 10.1039/c9nj01675a] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ideal bone tissue engineering scaffolds should be biocompatible, biodegradable, and mechanically robust and have the ability to regulate cell function.
Collapse
Affiliation(s)
- Shuang Zheng
- Department of Orthopedic Surgery
- The Second Hospital of Jilin University
- Changchun
- P. R. China
| | - Yonghong Guan
- Department of Orthopedic Surgery
- The Second Hospital of Jilin University
- Changchun
- P. R. China
| | - Haichi Yu
- Department of Orthopedic Surgery
- The Second Hospital of Jilin University
- Changchun
- P. R. China
| | - Ge Huang
- Department of Orthopedic Surgery
- The Second Hospital of Jilin University
- Changchun
- P. R. China
| | - Changjun Zheng
- Department of Orthopedic Surgery
- The Second Hospital of Jilin University
- Changchun
- P. R. China
| |
Collapse
|
11
|
Development of a photoresponsive chitosan conjugated prodrug nano-carrier for controlled delivery of antitumor drug 5-fluorouracil. Int J Biol Macromol 2019; 121:1070-1076. [DOI: 10.1016/j.ijbiomac.2018.10.095] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/01/2018] [Accepted: 10/14/2018] [Indexed: 10/28/2022]
|
12
|
Yuan B, Raucci MG, Fan Y, Zhu X, Yang X, Zhang X, Santin M, Ambrosio L. Injectable strontium-doped hydroxyapatite integrated with phosphoserine-tethered poly(epsilon-lysine) dendrons for osteoporotic bone defect repair. J Mater Chem B 2018; 6:7974-7984. [PMID: 32255042 DOI: 10.1039/c8tb02526f] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The control of the inflammatory response induced by the implantation of foreign biomaterials is fundamental in determining tissue healing. It has been shown that the activation of specific macrophage pathways upon contact with a biomaterial can lead either to a chronic inflammation preventing a physiological tissue repair or to an improved tissue healing. In the case of bone repair, calcium phosphate cements with good osteoconductivity properties have been successfully applied in bone defect filling and repair, but poor handling properties, insufficient viscous flow and unmatched degradation rate are still problems that remain unsolved. In this study, a strontium-doped hydroxyapatite (HA) gel was modified by integrating branched poly(epsilon-lysine) dendrons with third-generation branches exposing phosphoserine (SrHA/G3-K PS). The interaction of this material with macrophages was investigated in vitro, focusing on the secretion and gene expression of specific pro-inflammatory cytokines. Our results showed that the addition of strontium and G3-K PS to HA sol-gel could down-regulate the gene expression of inflammatory factors such as IL-1β, TNF-α and MCP-1, while increasing the gene expression of IL-6, a cytokine known for its osteogenic effect. These results were further confirmed by ELISA test of the respective protein concentrations. When exposed to supernatants of macrophage culture in the presence of strontium and G3-K PS, osteoblast viability was promoted with elevated osteogenic gene markers, in terms of OPG, ALP, OCN and COL-I. In vivo implantation experiments using an osteoporotic rat model with bone defect further confirmed that the addition of G3-K PS to HA could dramatically promote new bone regeneration. Although the introduction of strontium improved the degradation properties of the injectable materials, no positive effect on promoting in vivo bone regeneration was observed.
Collapse
Affiliation(s)
- Bo Yuan
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, China.
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Nokhasteh S, Sadeghi-Avalshahr A, Molavi AM, Khorsand-Ghayeni M, Naderi-Meshkin H. Effect of bioactive glass nanoparticles on biological properties of PLGA/collagen scaffold. Prog Biomater 2018; 7:111-119. [PMID: 29748742 PMCID: PMC6068071 DOI: 10.1007/s40204-018-0089-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 04/28/2018] [Indexed: 02/03/2023] Open
Abstract
Bioactive glasses have shown some interesting biological properties such as biocompatibility, biodegradation, and angiogenesis in skin tissue engineering. In the current research, the effects of MgO- or CoO-doped 64S bioactive glass with a composition of 64 SiO2-26 CaO-5 P2O5-5 MgO or CoO (mol%) were studied in relation with biological properties of electrospun [poly(lactic-co-glycolic acid) (PLGA)/collagen]. PLGA/collagen samples were rinsed in suspension of bioactive glass nanoparticles in distilled water with a concentration of 0.1 w/v and then freeze dried. Cell adhesion, viability, angiogenesis, and ionic release were performed and tested in culture medium containing fibroblast cells. Attachment and viability of fibroblast cells were increased significantly in bioglass-coated samples, while shrinkage in PLGA/collagen scaffold was reduced by the addition of bioactive glass. Vascular endothelial growth factor secretion in coated scaffold was dropped compared to the uncoated samples. This could be attributed to the fast degradation of glass nanoparticles, according to the inductively coupled plasma-atomic emission spectroscopy results.
Collapse
Affiliation(s)
- Samira Nokhasteh
- Department of Materials Research, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, 91775-1376, Iran
| | - Alireza Sadeghi-Avalshahr
- Department of Materials Research, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, 91775-1376, Iran
| | - Amir Mahdi Molavi
- Department of Materials Research, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, 91775-1376, Iran.
| | - Mohammad Khorsand-Ghayeni
- Department of Materials Research, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, 91775-1376, Iran
| | - Hojjat Naderi-Meshkin
- Stem Cell and Regenerative Medicine Research Department, Iranian Academic Center for Education, Culture and Research (ACECR), Mashhad Branch, Mashhad, 91775-1376, Iran
| |
Collapse
|
14
|
Ulu A, Noma SAA, Gurses C, Koytepe S, Ates B. Chitosan/Polyvinylpyrrolidone/MCM-41 Composite Hydrogel Films: Structural, Thermal, Surface, and Antibacterial Properties. STARCH-STARKE 2018. [DOI: 10.1002/star.201700303] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Ahmet Ulu
- Faculty of Science and Arts, Department of Chemistry, Inonu University,; Malatya 44280 Turkey
| | - Samir A. A. Noma
- Faculty of Science and Arts, Department of Chemistry, Inonu University,; Malatya 44280 Turkey
| | - Canbolat Gurses
- Faculty of Science and Arts, Department of Molecular Biology and Genetics, Inonu University; Malatya 44280 Turkey
| | - Suleyman Koytepe
- Faculty of Science and Arts, Department of Chemistry, Inonu University,; Malatya 44280 Turkey
| | - Burhan Ates
- Faculty of Science and Arts, Department of Chemistry, Inonu University,; Malatya 44280 Turkey
| |
Collapse
|
15
|
Yousefi SZ, Tabatabaei-Panah PS, Seyfi J. Emphasizing the role of surface chemistry on hydrophobicity and cell adhesion behavior of polydimethylsiloxane/TiO 2 nanocomposite films. Colloids Surf B Biointerfaces 2018; 167:492-498. [PMID: 29729626 DOI: 10.1016/j.colsurfb.2018.04.048] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 04/15/2018] [Accepted: 04/24/2018] [Indexed: 01/28/2023]
Abstract
Improving the bioinertness of materials is of great importance for developing biomedical devices that contact human tissues. The main goal of this study was to establish correlations among surface morphology, roughness and chemistry with hydrophobicity and cell adhesion in polydimethylsiloxane (PDMS) nanocomposites loaded with titanium dioxide (TiO2) nanoparticles. Firstly, wettability results showed that the nanocomposite loaded with 30 wt.% of TiO2 exhibited a superhydrophobic behavior; however, the morphology and roughness analysis proved that there was no discernible difference between the surface structures of samples loaded with 20 and 30 wt.% of nanoparticles. Both cell culture and MTT assay experiments showed that, despite the similarity between the surface structures, the sample loaded with 30 wt.% nanoparticles exhibits the greatest reduction in the cell viability (80%) as compared with the pure PDMS film. According to the X-ray photoelectron spectroscopy results, the remarkable reduction in cell viability of the superhydrophobic sample could be majorly attributed to the role of surface chemistry. The obtained results emphasize the importance of adjusting the surface properties especially surface chemistry to gain the optimum cell adhesion behavior.
Collapse
Affiliation(s)
| | | | - Javad Seyfi
- Department of Chemical Engineering, Shahrood Branch, Islamic Azad University, Shahrood, Iran.
| |
Collapse
|
16
|
Fiejdasz S, Horak W, Lewandowska-Łańcucka J, Szuwarzyński M, Salwiński J, Nowakowska M. Tuning of elasticity and surface properties of hydrogel cell culture substrates by simple chemical approach. J Colloid Interface Sci 2018; 524:102-113. [PMID: 29635083 DOI: 10.1016/j.jcis.2018.04.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/30/2018] [Accepted: 04/02/2018] [Indexed: 11/29/2022]
Abstract
When designing materials for tissue engineering applications various parameters characterizing both materials and tissue have to be taken into account. The characteristics such as chemistry, elasticity, wettability, roughness and morphology of the substrate's surface have significant impact on cell behavior. The paper presents biopolymer (collagen/chitosan) based hydrogel materials with tunable elasticity and surface properties useful for fabrication of substrates for cell culture. Using simple chemical approach involving the change in concentration of crosslinking agent (genipin) and composition of the reaction mixture the hydrogels characterized with various features were obtained. Detailed analysis of morphology, topography, roughness and elasticity of surface performed using Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and rheological measurements has shown that the topographical aspects and roughness parameter can be modulated in nanoscale regime (13-47 nm). Substrate's elasticity could be modified in a wide range (0.2-270 kPa). Biological in vitro studies on fibroblasts behavior revealed that the materials prepared provide satisfactory conditions for cell culture, ensuring their high viability, good adhesion and normal morphology. The genipin crosslinked collagen-chitosan hydrogels characterized by denser fiber structure, higher elasticity and lower surface roughness are the most attractive supports for fibroblasts cultivation. The results obtained indicate that the properties of the materials developed can be easily tailored to the needs of the given type of cells.
Collapse
Affiliation(s)
- Sylwia Fiejdasz
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Department of Solid State Physics, Al. Mickiewicza 30, 30-059 Kraków, Poland.
| | - Wojciech Horak
- AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics, Department of Machine Design and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland
| | | | - Michał Szuwarzyński
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland; AGH University of Science and Technology, Academic Centre for Materials and Nanotechnology, Al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Józef Salwiński
- AGH University of Science and Technology, Faculty of Mechanical Engineering and Robotics, Department of Machine Design and Technology, Al. Mickiewicza 30, 30-059 Kraków, Poland
| | - Maria Nowakowska
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Kraków, Poland.
| |
Collapse
|
17
|
Sultana T, Amirian J, Park C, Lee SJ, Lee BT. Preparation and characterization of polycaprolactone–polyethylene glycol methyl ether and polycaprolactone–chitosan electrospun mats potential for vascular tissue engineering. J Biomater Appl 2017; 32:648-662. [DOI: 10.1177/0885328217733849] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Recently, natural polymers are frequently comingled with synthetic polymers either by physical or chemical modification to prepare numerous tissue-engineered graft with promising biological function, strength, and stability. The aim of this study was to determine the efficiency for vascular tissue engineering of two distinctly different mats, one that comprised polycaprolactone–polyethylene glycol methyl ether and other that comprised polycaprolactone–chitosan. Nano/microfibrous mats prepared from electro-spinning were characterized for fiber diameter, porosity, wettability, and mechanical strength. Biological efficacy on both biodegradable mats was assessed by rat bone marrow mesenchymal stem cells, and polycaprolactone–polyethylene glycol methyl ether showed feasibility for use as an inner layer by inducing endothelial-specific gene expression and polycaprolactone–chitosan as an outer layer on dual layered without sacrificing tensile strength, small-diameter blood vessels. Therefore, scaffolds fabricated from this research could be potential sources for tissue-engineered vascular graft and could also overcome the well-known drawbacks, such as thrombogenicity and stenosis, in managing vascular disease.
Collapse
Affiliation(s)
- Tamanna Sultana
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University 366-1, Ssangyoung-Dong, Cheonan City, ChungCheonNam-Do, Republic of Korea
| | - Jhaleh Amirian
- Institute of Tissue Regeneration, Soonchunhyang University 366-1, Ssangyoung-Dong, Cheonan City, ChungCheonNam-Do, Republic of Korea
| | - Chanmi Park
- Institute of Tissue Regeneration, Soonchunhyang University 366-1, Ssangyoung-Dong, Cheonan City, ChungCheonNam-Do, Republic of Korea
| | - Seung Jin Lee
- Department of Thoracic and Cardiovascular Surgery, Soonchunhyang University Hospital, 31, 6-gil, Cheonan City, ChungCheonNam-Do, Republic of Korea
| | - Byong-Taek Lee
- Department of Regenerative Medicine, College of Medicine, Soonchunhyang University 366-1, Ssangyoung-Dong, Cheonan City, ChungCheonNam-Do, Republic of Korea
- Institute of Tissue Regeneration, Soonchunhyang University 366-1, Ssangyoung-Dong, Cheonan City, ChungCheonNam-Do, Republic of Korea
| |
Collapse
|
18
|
Koehler J, Verheyen L, Hedtrich S, Brandl FP, Goepferich AM. Alkaline poly(ethylene glycol)-based hydrogels for a potential use as bioactive wound dressings. J Biomed Mater Res A 2017; 105:3360-3368. [PMID: 28782253 DOI: 10.1002/jbm.a.36177] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 07/10/2017] [Accepted: 08/01/2017] [Indexed: 01/16/2023]
Abstract
The number of patients with chronic wounds is increasing constantly in today's aging society. However, little work is done so far tackling the associated disadvantageous shift of the wound pH. In our study, we developed two different approaches on pH-modulating wound dressing materials, namely, bioactive interpenetrating polymer network hydrogels based on poly(ethylene glycol) diacrylate/N-vinylimidazole/alginate (named VIx ) and poly(ethylene glycol) diacrylate/2-dimethylaminoethyl methacrylate/N-carboxyethylchitosan (named DMAEMAx ). Both formulations showed a good cytocompatibility and wound healing capacity in vitro. The developed dressing materials significantly increased the cell ingrowth in wounded human skin constructs; by 364% and 313% for the VIx and the DMAEMAx hydrogel formulation, respectively. Additionally, VIx hydrogels were found to be suitable scaffolds for superficial cell attachment. Our research on the material properties suggests that ionic interactions and hydrogen bonds are the driving forces for the mechanical and swelling properties of the examined hydrogels. High amounts of positively charged amino groups in DMAEMAx hydrogels caused increased liquid uptake (around 190%), whereas VIx hydrogels showed a 10-fold higher maximum compressive stress in comparison to hydrogels without ionizable functional groups. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 3360-3368, 2017.
Collapse
Affiliation(s)
- Julia Koehler
- Department of Pharmaceutical Technology, University of Regensburg, Regensburg, 93053, Germany
| | - Leonie Verheyen
- Institute of Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Berlin, 14195, Germany
| | - Sarah Hedtrich
- Institute of Pharmacy, Pharmacology and Toxicology, Freie Universität Berlin, Berlin, 14195, Germany
| | - Ferdinand P Brandl
- Department of Pharmaceutical Technology, University of Regensburg, Regensburg, 93053, Germany
| | - Achim M Goepferich
- Department of Pharmaceutical Technology, University of Regensburg, Regensburg, 93053, Germany
| |
Collapse
|
19
|
Zheng D, Neoh KG, Kang ET. Immobilization of alendronate on titanium via its different functional groups and the subsequent effects on cell functions. J Colloid Interface Sci 2017; 487:1-11. [PMID: 27743540 DOI: 10.1016/j.jcis.2016.10.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/06/2016] [Accepted: 10/06/2016] [Indexed: 12/31/2022]
Abstract
Immobilization of alendronate on orthopedic implants offers the possibility of enhancing osteogenesis without potentially adverse effects associated with systemic administration of this drug. In this work, alendronate was immobilized on titanium (Ti) via either its phosphate (Method 1) or amino (Method 2) groups, and responses of osteoblasts and human mesenchymal stem cells (hMSCs) on these surfaces were investigated. These modified substrates have similar surface roughness and are negatively charged. With similar amounts of immobilized alendronate, these two types of modified substrates showed comparable osteogenic stimulating effects in enhancing osteoblasts' alkaline phosphatase (ALP) activity and calcium deposition for the first 10days. However, alendronate immobilized via its phosphate groups was less stable, and gradually leached into the medium. As a result, its stimulating effect on osteoblast differentiation diminished with time. On the other hand, alendronate immobilized via its amino group stimulated osteoblast differentiation over 21days, and with 1655ng/cm2 of immobilized alendronate on the Ti substrate, calcium deposition by osteoblasts and hMSCs increased by 30% and 69%, respectively, compared to pristine Ti after 21days. The expressions of runt-related transcription factor 2, osterix, osteopontin and osteocalcin in hMSCs cultured on this substrate were monitored. The up-regulation of these genes is postulated to play a role in the acceleration of osteogenic differentiation of hMSCs cultured on the alendronate-modified substrate over those on pristine Ti.
Collapse
Affiliation(s)
- Dong Zheng
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 117576, Singapore
| | - Koon Gee Neoh
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 117576, Singapore.
| | - En-Tang Kang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Kent Ridge, Singapore 117576, Singapore
| |
Collapse
|
20
|
Cao S, Li H, Li K, Lu J, Zhang L. In vitro mineralization of MC3T3-E1 osteoblast-like cells on collagen/nano-hydroxyapatite scaffolds coated carbon/carbon composites. J Biomed Mater Res A 2015; 104:533-43. [PMID: 26476098 DOI: 10.1002/jbm.a.35593] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 10/10/2015] [Accepted: 10/15/2015] [Indexed: 01/11/2023]
Abstract
Collagen/nano-hydroxyapatite (collagen/nHA) scaffolds were successfully prepared on carbon/carbon composites as bioactive films using the layer-by-layer coating method. Surface characterizations of collagen/nHA scaffolds were detected by scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. Compressive strengths of the scaffolds were evaluated by a universal test machine. In vitro biological performances were determined using scaffolds seeded with MC3T3-E1 osteoblasts-like cells and cultured in mineralization medium for up to 21 days. In addition, cellular morphologies and several related gene expressions of MC3T3-E1 cells in the scaffolds were also evaluated. Chemical and morphological analysis showed that the scaffolds had uniform pore sizes and unified phase composition. Mechanical testing indicated that the collagen/nHA scaffolds had the highest compressive strength in 50% of strain condition when the proportion of collagen and nano-hydroxyapatite was 1:3. Cellular morphology observations and cytology tests indicated that MC3T3-E1 cells were adhered on these scaffolds and proliferated. SEM photographs and gene expressions showed that mineralized MC3T3-E1 cells and newly formed extra cellular matrix (ECM) filled up the pores of the scaffolds after the 3-week mineralization inducement. Nano-sized apatite particles were secreted from MC3T3-E1 cells and combined with the reconstructed ECM. Collectively, collagen/nHA scaffolds provided C/C composites with a biomimetic surface for cell adhesion, proliferation and mineralized extra cellular matrices formation.
Collapse
Affiliation(s)
- Sheng Cao
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Xi'an, Shaanxi, China
| | - Hejun Li
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Xi'an, Shaanxi, China
| | - Kezhi Li
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Xi'an, Shaanxi, China
| | - Jinhua Lu
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Xi'an, Shaanxi, China
| | - Leilei Zhang
- State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Xi'an, Shaanxi, China
| |
Collapse
|
21
|
Huang Q, Gao B, Wang L, Zhang HY, Li XJ, Shi J, Wang Z, Zhang JK, Yang L, Luo ZJ, Liu J. Ophiopogonin D: A new herbal agent against osteoporosis. Bone 2015; 74:18-28. [PMID: 25582622 DOI: 10.1016/j.bone.2015.01.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Revised: 12/16/2014] [Accepted: 01/05/2015] [Indexed: 10/24/2022]
Abstract
Excessive reactive oxygen species (ROS) play an important role in the development of osteoporosis. Ophiopogonin D (OP-D), isolated from the traditional Chinese herbal agent Radix Ophiopogon japonicus, is a potent anti-oxidative agent. We hypothesized that OP-D demonstrates anti-osteoporosis effects via decreasing ROS generation in mouse pre-osteoblast cell line MC3T3-E1 subclone 4 cells and a macrophage cell line RAW264.7 cells. We investigated OP-D on osteogenic and osteoclastic differentiation under oxidative status. Hydrogen peroxide (H2O2) was used to establish an oxidative damage model. In vivo, we established a murine ovariectomized (OVX) osteoporosis model. Then, we searched the molecular mechanism of OP-D against osteoporosis. Our results revealed that OP-D significantly promoted the proliferation of MC3T3-E1 cells and improved some osteogenic markers. Moreover, OP-D reduced TRAP activity and the mRNA expressions of osteoclastic genes in RAW264.7 cells. OP-D suppressed ROS generation in both MC3T3-E1 and RAW264.7 cells. OP-D treatment reduced the activity of serum bone degradation markers, including CTX-1 and TRAP. Further research showed that OP-D displayed anti-osteoporosis effects via reducing ROS through the FoxO3a-β-catenin signaling pathway. In summary, our results indicated that the protective effects of OP-D against osteoporosis are linked to a reduction in oxidative stress via the FoxO3a-β-catenin signaling pathway, suggesting that OP-D may be a beneficial herbal agent in bone-related disorders, such as osteoporosis.
Collapse
Affiliation(s)
- Qiang Huang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China
| | - Bo Gao
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China
| | - Long Wang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China
| | - Hong-Yang Zhang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China
| | - Xiao-Jie Li
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China
| | - Jun Shi
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China
| | - Zheng Wang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China
| | - Jin-Kang Zhang
- Air Force General Hospital, People's Liberation Army, Beijing 100142, People's Republic of China
| | - Liu Yang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China
| | - Zhuo-Jing Luo
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China
| | - Jian Liu
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, People's Republic of China.
| |
Collapse
|
22
|
Mallakpour S, Madani M. Valine amino acid-functionalized multiwalled carbon nanotube/chitosan green nanocomposite membranes. HIGH PERFORM POLYM 2014. [DOI: 10.1177/0954008314561245] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The aim of this research was to align functionalized multiwalled carbon nanotubes (MWCNT)–valine amino acid into a chitosan matrix. At first, the MWCNTs were functionalized with valine amino acid and chitosan/grafted MWCNT-valine composites were prepared via covalently bonding of chitosan on the surface of MWCNT-valine. The functionalized MWCNTs and resulting films were characterized using Fourier transform infrared spectroscopy, thermogravimetric analysis, field-emission scanning electron microscopy, and transmission electron microscopy. A significant synergistic effect of MWCNT provided enhanced mechanical properties and thermal stability on the obtained nanocomposites.
Collapse
Affiliation(s)
- Shadpour Mallakpour
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, Islamic Republic of Iran
- Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan, Islamic Republic of Iran
- Center of Excellence in Sensors and Green Chemistry, Department of Chemistry, Isfahan University of Technology, Isfahan, Islamic Republic of Iran
| | - Maryam Madani
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan, Islamic Republic of Iran
| |
Collapse
|
23
|
Yang G, Li X, Yuan G, Liu P, Fan M. The effects of osterix on the proliferation and odontoblastic differentiation of human dental papilla cells. J Endod 2014; 40:1771-7. [PMID: 25258338 DOI: 10.1016/j.joen.2014.04.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 03/07/2014] [Accepted: 04/25/2014] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Dental papilla cells (DPCs) are precursors of odontoblasts and have the potential to differentiate into odontoblasts. Osteoblasts and odontoblasts have many common characteristics. Osterix (Osx) is essential for osteoblast differentiation. However, no information is available for the effects of Osx on the odontoblastic differentiation of DPCs. The purpose of this study was to investigate the effects of Osx on the proliferation and odontoblastic differentiation of DPCs. METHODS An immortalized human dental papilla cell (hDPC) line was used. Osx was stably overexpressed or knocked down in hDPCs with infection of lentiviral particles to determine its biological effects on hDPCs. The proliferation of cells was measured by the 5-ethynyl-2'-deoxyuridine incorporation assay and direct cell counting. Expressions of dentin sialophosphoprotein, nestin, dentin matrix protein 1, and alkaline phosphatase were detected by real-time polymerase chain reaction to determine the odontoblastic differentiation of cells. The mineralization ability of cells was evaluated by von Kossa staining and alkaline phosphatase activity assay. RESULTS Overexpression of Osx retarded the proliferation of hDPCs, whereas knockdown of Osx increased the cell proliferation. Overexpression of Osx promoted the odontoblastic differentiation of hDPCs by up-regulating odontoblastic differentiation genes and increased the mineralization ability of hDPCs. Knockdown of Osx down-regulated odontoblastic differentiation genes and decreased the mineralization ability of hDPCs. CONCLUSIONS Osx might function as a potential regulator for the proliferation and odontoblastic differentiation of hDPCs.
Collapse
Affiliation(s)
- Guobin Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan
| | - Xiaoyan Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan; Department of Endodontics, School and Hospital of Stomatology, Shandong University, Shandong Provincial Key Laboratory of Oral Biomedicine, Shandong, China
| | - Guohua Yuan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan
| | - Pingxian Liu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan
| | - Mingwen Fan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan.
| |
Collapse
|
24
|
Genipin-crosslinked chitosan/poly-l-lysine gels promote fibroblast adhesion and proliferation. Carbohydr Polym 2014; 108:91-8. [DOI: 10.1016/j.carbpol.2014.03.021] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Revised: 03/12/2014] [Accepted: 03/13/2014] [Indexed: 11/21/2022]
|
25
|
Bovine collagen peptides compounds promote the proliferation and differentiation of MC3T3-E1 pre-osteoblasts. PLoS One 2014; 9:e99920. [PMID: 24926875 PMCID: PMC4057461 DOI: 10.1371/journal.pone.0099920] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2013] [Accepted: 05/20/2014] [Indexed: 01/22/2023] Open
Abstract
Objective Collagen peptides (CP) compounds, as bone health supplements, are known to play a role in the treatment of osteoporosis. However, the molecular mechanisms of this process remain unclear. This study aimed to investigate the effects of bovine CP compounds on the proliferation and differentiation of MC3T3-E1 cells. Methods Mouse pre-osteoblast cell line MC3T3-E1 subclone 4 cells were treated with bovine CP compounds. Cell proliferation was analyzed by MTT assays and the cell cycle was evaluated by flow cytometry scanning. Furthermore, MC3T3-E1 cell differentiation was analyzed at the RNA level by real-time PCR and at the protein level by western blot analysis for runt-related transcription factor 2 (Runx2), a colorimetric p-nitrophenyl phosphate assay for alkaline phosphatase (ALP), and ELISA for osteocalcin (OC). Finally, alizarin red staining for mineralization was measured using Image Software Pro Plus 6.0. Results Cell proliferation was very efficient after treatment with different concentrations of bovine CP compounds, and the best concentration was 3 mg/mL. Bovine CP compounds significantly increased the percentage of MC3T3-E1 cells in G2/S phase. Runx2 expression, ALP activity, and OC production were significantly increased after treatment with bovine CP compounds for 7 or 14 days. Quantitative analyses with alizarin red staining showed significantly increased mineralization of MC3T3-E1 cells after treatment with bovine CP compounds for 14 or 21 days. Conclusions Bovine CP compounds increased osteoblast proliferation, and played positive roles in osteoblast differentiation and mineralized bone matrix formation. Taking all the experiments together, our study indicates a molecular mechanism for the potential treatment of osteoarthritis and osteoporosis.
Collapse
|
26
|
Park S, Im GI. Stem cell responses to nanotopography. J Biomed Mater Res A 2014; 103:1238-45. [PMID: 24853234 DOI: 10.1002/jbm.a.35236] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 05/07/2014] [Accepted: 05/21/2014] [Indexed: 12/25/2022]
Abstract
Cells interact with various nanoscaled topographical and biochemical cues in their cellular macromolecular environment. Nanotopography recreates or mimic the cellular macromolecular environment in vitro. The influence of material surface topography on the behavior of adherent cells has been studied. Current techniques enable various kinds of nanopatterned surface to be generated and applied to cells. The purpose of this review is to provide an overview of nanotopography and its surface patterns, and introduce nanotopography effects on cell behavior including cell attachment, proliferation, and cell differentiation with particular emphasis on musculoskeletal regeneration.
Collapse
Affiliation(s)
- Siyeon Park
- Department of Orthopaedics, Dongguk University, Ilsan Hospital, Korea
| | | |
Collapse
|
27
|
Yang GB, Li XY, Yuan GH, Liu H, Fan MW. Immortalization and characterization of human dental papilla cells with odontoblastic differentiation. Int Endod J 2013; 46:565-72. [PMID: 23186070 DOI: 10.1111/iej.12029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Accepted: 10/09/2012] [Indexed: 01/22/2023]
Abstract
AIM To establish a cell line of immortalized human dental papilla cells (hDPCs). METHODOLOGY Primary hDPCs were cultured and infected with lentivirus containing the hTERT gene. Integration and transcription of the hTERT gene were verified by PCR. The characteristics of the cells, such as morphology, proliferation and mineralization, were analysed. Also, the expression of odontoblastic-related markers including ALP, DMP1, DLX3, OSX, DSP and Nestin, was detected by immunohistochemistry and real-time RT-PCR. RESULTS hTERT gene was integrated into genomic DNA of immortalized cells (hDPC-TERT) and transcribed into mRNA. With long-time culture, hDPC-TERT bypassed senescence and grew over 120 population doublings. hDPC-TERT cells have a higher proliferation rate, but retain the phenotypic characteristics of the primary hDPCs, and so was ALP activity and mineralization activity. Furthermore, the hDPC-TERT cells express no DSP and Nestin with maintenance medium, but highly expressed DSP and Nestin after odontoblastic induction. CONCLUSIONS A line of immortalized human dental papilla cells, which remains in an undifferentiated state and has odontoblastic differentiation potential, was established. This cell line can be used as a cell model for studying the mechanism of the initiation of odontoblast differentiation.
Collapse
Affiliation(s)
- G B Yang
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | | | | | | | | |
Collapse
|
28
|
Souza HK, Campiña JM, Sousa AM, Silva F, Gonçalves MP. Ultrasound-assisted preparation of size-controlled chitosan nanoparticles: Characterization and fabrication of transparent biofilms. Food Hydrocoll 2013. [DOI: 10.1016/j.foodhyd.2012.10.005] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
29
|
Mobed-Miremadi M, Nagendra RK, Ramachandruni SL, Rook JJ, Keralapura M, Goedert M. Polystyrene microsphere and 5-fluorouracil release from custom-designed wound dressing films. Prog Biomater 2013; 2:1. [PMID: 29470744 PMCID: PMC5151105 DOI: 10.1186/2194-0517-2-1] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 01/20/2013] [Indexed: 02/08/2023] Open
Abstract
Custom-designed wound dressing films of chitosan and alginate have been prepared by a casting/solvent evaporation method for hydrophobic therapeutic agent encapsulation. In this parametric study, the propylene glycol (PG) and calcium chloride (CaCl2) concentrations were varied for chitosan and alginate films, respectively. Mechanical and chemical inter-related responses under observations included thickness (th), elasticity (E), tensile strength (TS), sorption ability (S%) and kinetics of in-vitro drug release, specifically in terms of membrane time to burst (t B ) and duration of release (t R ). As shown by results of a one tailed t-test significance testing at the 95% confidence interval (α = 0.05), alginate films were significantly more elastic (p = 0.003), thinner (p = 0.004) and more susceptible to osmotic burst (p = 0.011) and characterized by a longer duration of release (p = 0.03). Meanwhile chitosan films exhibited superior moisture permeability (p = 0.006) and sorption characteristics (p = 0.001), indicative of higher hydrophilicity. There were no significant differences in tensile strength (p = 0.324) for alginate and chitosan-based formulations. Preliminary testing was conducted using 0.71 μm in diameter microspheres for modeling film dissolution into Lactated Ringer's solution. Experimental release profiles were modeled for each film from which the average release from alginate films (M AGCa = 81%) was estimated to be twice the percentage associated with chitosan films (M CD = 42%). The film comprised of 2.5% (w/v) medium MW chitosan/dextran 70 kDa (5:1) was selected for studying the release of 5-Fluorouracil (5-FU) as a model hydrophobic drug. Diffusion coupled with film disintegration is immediate (t B = 0) in case of encapsulated 5-FU as compared to the control film encapsulating microspheres characterized by t B = 70 min ± 7 min. This shift in release profile and the ability to modulate the timing of membrane burst can be attributed to the approximate ratio (1: 505) in molecular size between drug and microsphere. This hypothesis has been validated by the film pore size measured to be 430 nm ± 88 nm using atomic force microscopy.
Collapse
Affiliation(s)
- Maryam Mobed-Miremadi
- Department of Biomedical, Chemical and Materials Engineering, San Jose State University, San Jose, CA, 95192-0082, USA.
| | | | | | - Jason James Rook
- MSE Biomedical Engineering, San Jose State University, San Jose, CA, USA
| | - Mallika Keralapura
- Department of Electrical Engineering, San Jose State University, San Jose, CA, USA
| | - Michel Goedert
- Department of Biomedical, Chemical and Materials Engineering, San Jose State University, San Jose, CA, 95192-0082, USA
| |
Collapse
|
30
|
Galli C, Piemontese M, Meikle ST, Santin M, Macaluso GM, Passeri G. Biomimetic coating with phosphoserine-tethered poly(epsilon-lysine) dendrons on titanium surfaces enhances Wnt and osteoblastic differentiation. Clin Oral Implants Res 2012; 25:e133-9. [DOI: 10.1111/clr.12075] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2012] [Indexed: 01/22/2023]
Affiliation(s)
- Carlo Galli
- Department of Biotechnology; Biomedical and Translational Sciences, University of Parma; Parma Italy
| | - Marilina Piemontese
- Department of Clinical and Experimental Medicine; University of Parma; Parma Italy
| | - Steven T. Meikle
- Brighton Studies in Tissue-mimicry and Aided Regeneration; School of Pharmacy and Biomolecular Sciences; University of Brighton; Brighton UK
| | - Matteo Santin
- Brighton Studies in Tissue-mimicry and Aided Regeneration; School of Pharmacy and Biomolecular Sciences; University of Brighton; Brighton UK
| | - Guido M. Macaluso
- Department of Biotechnology; Biomedical and Translational Sciences, University of Parma; Parma Italy
| | - Giovanni Passeri
- Department of Clinical and Experimental Medicine; University of Parma; Parma Italy
| |
Collapse
|
31
|
Gao W, Lai JCK, Leung SW. Functional enhancement of chitosan and nanoparticles in cell culture, tissue engineering, and pharmaceutical applications. Front Physiol 2012; 3:321. [PMID: 22934070 PMCID: PMC3429090 DOI: 10.3389/fphys.2012.00321] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2012] [Accepted: 07/23/2012] [Indexed: 01/04/2023] Open
Abstract
As a biomaterial, chitosan has been widely used in tissue engineering, wound healing, drug delivery, and other biomedical applications. It can be formulated in a variety of forms, such as powder, film, sphere, gel, and fiber. These features make chitosan an almost ideal biomaterial in cell culture applications, and cell cultures arguably constitute the most practical way to evaluate biocompatibility and biotoxicity. The advantages of cell cultures are that they can be performed under totally controlled environments, allow high throughput functional screening, and are less costly, as compared to other assessment methods. Chitosan can also be modified into multilayer composite by combining with other polymers and moieties to alter the properties of chitosan for particular biomedical applications. This review briefly depicts and discusses applications of chitosan and nanoparticles in cell culture, in particular, the effects of chitosan and nanoparticles on cell adhesion, cell survival, and the underlying molecular mechanisms: both stimulatory and inhibitory influences are discussed. Our aim is to update the current status of how nanoparticles can be utilized to modify the properties of chitosan to advance the art of tissue engineering by using cell cultures.
Collapse
Affiliation(s)
- Wenjuan Gao
- Department of Civil and Environmental Engineering, School of Engineering, Idaho State University Pocatello, ID, USA
| | | | | |
Collapse
|
32
|
Wang W, Li F, Wang K, Cheng B, Guo X. PAPSS2 promotes alkaline phosphates activity and mineralization of osteoblastic MC3T3-E1 cells by crosstalk and Smads signal pathways. PLoS One 2012; 7:e43475. [PMID: 22916269 PMCID: PMC3420899 DOI: 10.1371/journal.pone.0043475] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 07/20/2012] [Indexed: 12/17/2022] Open
Abstract
Several studies have indicated that PAPSS2 (3'-phosphoadenosine-5'-phosphosulfate synthetase 2) activity is important to normal skeletal development. Mouse PAPSS2 is predominantly expressed during the formation of the skeleton and cartilaginous elements of the mouse embryo and in newborn mice. However, the role and mechanism of PAPSS2 in bone formation remains largely unidentified. By analyzing the expression pattern of the PAPSS2 gene, we have found that PAPSS2 is expressed in bone tissue and bone formation. PAPSS2 transcripts increase during osteoblast differentiation and are in less level in RANKL-induced osteoclast like cells. By using lentivirus-mediated RNA interference (RNAi) technology, we knocked down PAPSS2 expression in MC3T3-E1 osteoblast. Silencing of PAPSS2 expression significantly decreases ALP activity and cell mineralization, inhibits expression of osteoblast marker osteopontin (OPN) and collagen I. Conversely, overexpression of PAPSS2 promotes the MC3T3-E1 to differentiate into osteoblast and mineralization. Moreover, compared to that in the control cells, the mRNA level and protein expression of phosphorylated Smad 2/3, which is a key transcriptional factor in the Smad osteoblast differentiation pathway, showed significant decreases in PAPSS2-silenced cells and increases in PAPSS2-overexpression cells. These results suggest that PAPSS2 might regulate osteoblast ALP activity and cell mineralization, probably through Smads signal pathways.
Collapse
Affiliation(s)
- Weizhuo Wang
- Department of Orthopedics Surgery, the Second Affiliated Hospital, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi, People's Republic of China.
| | | | | | | | | |
Collapse
|
33
|
Luo C, Li L, Li J, Yang G, Ding S, Zhi W, Weng J, Zhou S. Modulating cellular behaviors through surface nanoroughness. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32007j] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
34
|
He Q, Gong K, Ao Q, Ma T, Yan Y, Gong Y, Zhang X. Positive charge of chitosan retards blood coagulation on chitosan films. J Biomater Appl 2011; 27:1032-45. [PMID: 22207609 DOI: 10.1177/0885328211432487] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In this study, a series of chitosan films with different protonation degrees were prepared by deacidification with NaOH aqueous or ethanol solutions. The films were then used as a model to investigate the effects of the positive charge of chitosan on blood coagulation. The results showed that the positive charge of chitosan acted as a double-edged sword, in that it promoted erythrocyte adhesion, fibrinogen adsorption, and platelet adhesion and activation, but inhibited activation of the contact system. In contrast to prevailing views, we found that the positive charge of chitosan retarded thrombin generation and blood coagulation on these films. At least two reasons were responsible for this phenomenon. First, the positive charge inhibited the contact activation, and second, the positive charge could not significantly promote the activation of non-adherent platelets in the bulk phase during the early stage of coagulation. The present findings improve our understanding of the events leading to blood coagulation on chitosan films, which will be useful for the future development of novel chitosan-based hemostatic devices.
Collapse
Affiliation(s)
- Qing He
- State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Life Sciences, Tsinghua University, Beijing 100084, China
| | | | | | | | | | | | | |
Collapse
|
35
|
He Q, Ao Q, Gong Y, Zhang X. Preparation of chitosan films using different neutralizing solutions to improve endothelial cell compatibility. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:2791-2802. [PMID: 22042456 DOI: 10.1007/s10856-011-4444-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2011] [Accepted: 09/05/2011] [Indexed: 05/31/2023]
Abstract
The development of chitosan-based constructs for application in large-size defects or highly vascularized tissues is still a challenging issue. The poor endothelial cell compatibility of chitosan hinders the colonization of vascular endothelial cells in the chitosan-based constructs, and retards the establishment of a functional microvascular network following implantation. The aim of the present study is to prepare chitosan films with different neutralization methods to improve their endothelial cell compatibility. Chitosan salt films were neutralized with either sodium hydroxide (NaOH) aqueous solution, NaOH ethanol solution, or ethanol solution without NaOH. The physicochemical properties and endothelial cell compatibility of the chitosan films were investigated. Results indicated that neutralization with different solutions affected the surface chemistry, swelling ratio, crystalline conformation, nanotopography, and mechanical properties of the chitosan films. The NaOH ethanol solution-neutralized chitosan film (Chi-NaOH/EtOH film) displayed a nanofiber-dominant surface, while the NaOH aqueous solution-neutralized film (Chi-NaOH/H(2)O film) and the ethanol solution-neutralized film (Chi-EtOH film) displayed nanoparticle-dominant surfaces. Moreover, the Chi-NaOH/EtOH films exhibited a higher stiffness as compared to the Chi-NaOH/H(2)O and Chi-EtOH films. Endothelial cell compatibility of the chitosan films was evaluated with a human microvascular endothelial cell line, HMEC-1. Compared with the Chi-NaOH/H(2)O and Chi-EtOH films, HMECs cultured on the Chi-NaOH/EtOH films fully spread and exhibited significantly higher levels of adhesion and proliferation, with retention of the endothelial phenotype and function. Our findings suggest that the surface nanotopography and mechanical properties contribute to determining the endothelial cell compatibility of chitosan films. The nature of the neutralizing solutions can affect the physicochemical properties and endothelial cell compatibility of chitosan films. Therefore, selection of suitable neutralization methods is highly important for the application of chitosan in tissue engineering.
Collapse
Affiliation(s)
- Qing He
- State Key Laboratory of Biomembrane and Membrane Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
| | | | | | | |
Collapse
|
36
|
Choong C, Yuan S, Thian ES, Oyane A, Triffitt J. Optimization of poly(ε-caprolactone) surface properties for apatite formation and improved osteogenic stimulation. J Biomed Mater Res A 2011; 100:353-61. [DOI: 10.1002/jbm.a.33278] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 08/18/2011] [Accepted: 09/19/2011] [Indexed: 11/08/2022]
|
37
|
Bacakova L, Filova E, Parizek M, Ruml T, Svorcik V. Modulation of cell adhesion, proliferation and differentiation on materials designed for body implants. Biotechnol Adv 2011; 29:739-67. [PMID: 21821113 DOI: 10.1016/j.biotechadv.2011.06.004] [Citation(s) in RCA: 565] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 05/30/2011] [Accepted: 06/09/2011] [Indexed: 12/12/2022]
Affiliation(s)
- Lucie Bacakova
- Department of Growth and Differentiation of Cell Populations, Institute of Physiology, Academy of Sciences of the Czech Republic, Videnska 1082, 14220 Prague 4-Krc, Czech Republic.
| | | | | | | | | |
Collapse
|
38
|
Mladenović Ž, Sahlin-Platt A, Andersson B, Johansson A, Björn E, Ransjö M. In vitrostudy of the biological interface of Bio-Oss: implications of the experimental setup. Clin Oral Implants Res 2011; 24:329-35. [DOI: 10.1111/j.1600-0501.2011.02334.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2011] [Indexed: 02/02/2023]
Affiliation(s)
| | | | - Britta Andersson
- Department of Medicine Solna; Karolinska Institutet; Stockholm; Sweden
| | | | - Erik Björn
- Department of Chemistry; Umeå University; Umeå; Sweden
| | - Maria Ransjö
- Department of Odontology; Umeå University; Umeå; Sweden
| |
Collapse
|
39
|
Ulery BD, Nair LS, Laurencin CT. Biomedical Applications of Biodegradable Polymers. JOURNAL OF POLYMER SCIENCE. PART B, POLYMER PHYSICS 2011; 49:832-864. [PMID: 21769165 PMCID: PMC3136871 DOI: 10.1002/polb.22259] [Citation(s) in RCA: 1192] [Impact Index Per Article: 91.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Utilization of polymers as biomaterials has greatly impacted the advancement of modern medicine. Specifically, polymeric biomaterials that are biodegradable provide the significant advantage of being able to be broken down and removed after they have served their function. Applications are wide ranging with degradable polymers being used clinically as surgical sutures and implants. In order to fit functional demand, materials with desired physical, chemical, biological, biomechanical and degradation properties must be selected. Fortunately, a wide range of natural and synthetic degradable polymers has been investigated for biomedical applications with novel materials constantly being developed to meet new challenges. This review summarizes the most recent advances in the field over the past 4 years, specifically highlighting new and interesting discoveries in tissue engineering and drug delivery applications.
Collapse
Affiliation(s)
- Bret D. Ulery
- Department of Orthopaedic Surgery, New England Musculoskeletal Institute, University of Connecticut Health Center, Farmington, Connecticut 06030
- Institute of Regenerative Engineering, University of Connecticut Health Center, Farmington, Connecticut 06030
| | - Lakshmi S. Nair
- Department of Orthopaedic Surgery, New England Musculoskeletal Institute, University of Connecticut Health Center, Farmington, Connecticut 06030
- Institute of Regenerative Engineering, University of Connecticut Health Center, Farmington, Connecticut 06030
- Department of Chemical, Materials & Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06268
| | - Cato T. Laurencin
- Department of Orthopaedic Surgery, New England Musculoskeletal Institute, University of Connecticut Health Center, Farmington, Connecticut 06030
- Institute of Regenerative Engineering, University of Connecticut Health Center, Farmington, Connecticut 06030
- Department of Chemical, Materials & Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06268
| |
Collapse
|
40
|
Moutzouri AG, Athanassiou GM. Attachment, Spreading, and Adhesion Strength of Human Bone Marrow Cells on Chitosan. Ann Biomed Eng 2010; 39:730-41. [DOI: 10.1007/s10439-010-0188-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Accepted: 10/11/2010] [Indexed: 11/28/2022]
|
41
|
Cai K, Kong T, Wang L, Liu P, Yang W, Chen C. Regulation of endothelial cells migration on poly(D, L-lactic acid) films immobilized with collagen gradients. Colloids Surf B Biointerfaces 2010; 79:291-7. [PMID: 20462745 DOI: 10.1016/j.colsurfb.2010.04.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2009] [Revised: 04/12/2010] [Accepted: 04/15/2010] [Indexed: 11/15/2022]
Abstract
To investigate the effect of protein surface-density gradient on the motility of endothelial cells, we developed a novel approach for the fabrication of a collagen density gradient onto poly(d, l-lactic acid) (PDLLA) films in this study. The approach involves a sequential alkali hydrolysis of PDLLA films to produce a density gradient of -COOH moieties onto the films, which were activated and then covalently linked with collagen. A collagen surface-density gradient onto PDLLA films was thus generated by this approach. Contact angle measurement and confocal laser scanning microscopy (CLSM) were employed to confirm the formation of -COOH gradient and collagen gradient, respectively. All results proved the feasibility of the fabrication of a collagen density gradient onto PDLLA films via the approach. Endothelial cells cultured on the gradient areas with low and moderate collagen surface-densities displayed a strong motility tendency, with the values such as net displacement, total distance, chemotactic index, migration rate and cell trajectories in parallel to the gradient. However, endothelial cells grew on the gradient area with high collagen density demonstrated a reverse response to the collagen gradient clue. These results suggest that cell motility is regulated by the collagen gradient with a surface-density dependent manner. This study provides an alternative for the fabrication of protein surface-density gradient onto biodegradable substrates to investigate chemical stimuli induced cell directional motility. It is potentially important for understanding the controlled angiogenesis for implantation of tissue-engineered constructs.
Collapse
Affiliation(s)
- Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, PR China.
| | | | | | | | | | | |
Collapse
|